The LG-303 is an enhanced laser sight offering for Ruger SP101 revolvers. The LG-303 features a comfortable and ergonomic overmold material for a better positive-firing grip on the weapon. With a front activated switch, the Lasergrips is engaged automatically, or as we say, instinctively, as you hold the revolver naturally. The LG-303 installs in seconds and is fully adjustable for windage and elevation.